Valve assembly



Sept. 22, 1953 P. ENGSTRUM VALVE ASSEMBLY Filed July 28, 1950 q Etta/wagPatented Sept. 22, 1953 Paul. Enestrum. Associates, Inc.,

Washington,

D. 0., a corporationof Delaware Application Jnlyzfl, 1950, .SerialNo.176,422.;

4 Claims. 1

This invention relates to a valve assembly.

The invention is more particularly concerned with a valve assemblyforuse in connection with small containers for liquids havinga highvolatile solvent in chemical compositions, such as resins, waxes,paints, etc.

Furthermore, the invention 'is more particularly characterized by arelatively small valve assembly for operative association with arelatively small container, and wherein the valve assembly is adapted tocontrol jet dispensing-of liquid from the container,

The improved valve assembly, in general, comprises a housing having,achamber for communication with the interior of a container, a smallliquid dispensing port opening out from the chamber, and a valve seatand cooperating valve within the chamber for controlling the flow ofliquid from a container and through the port.

In such a valve construction, the port is relatively small and is snbleto. becoming partially or wholly closed by the dryingof liquidsthereinbetween dispensin .operations. Furt rmor in such constructign, the endof the. port is substantially distant f omthe valve-and according;- y mliq remainsin the port, after closure f th v lv whi h results in. bJ'Ol'IiO bIQQIQD- lets falling from the, end of the. port.

It is accordingly apr mary object of. this'invention to, pr vide.avalvea semblyfw the above noted purpose, wherein the above notedobjections are wholly overcome.

A further object of the invention is to: provide a valve assembly of theabove noted character, wherein the liquid flow-controlling valve isprovided with a port closing and cleaning member.

Other objects and advantages of the invention will become apparent inthe course of the following detailed description, taken in connectionwith the accompanying drawing, wherein- Figure 1 is a vertical axialsection of the improved valve assembly, the valve being shown in openposition in dot-and-dash lines.

Fig. 2 is an end view of the valve assembly as viewed from the right ofFig. 1.

Fig. 3 is a plan view of a spring disk forming an element of theassembly.

Referring now in detail to the drawing, wherein the assembly isillustrated many times the actual size thereof, I designates a housinghaving a broken perimeter, since such housing may be of any suitableform for operative association with any type liquid container.

A cylindrical valve member H is suitably supported within an opening I2in the housing, and

such member includes a camming flange I3 which projects within a chamberM in the housing l0.

Disposed within the chamber [4 for sliding movement axially of thehousing is the flange [5 of a cup member it having a base l7.

Disposed within the valve member I I for movement axially thereof is ashaft or stem l8 whose forward end is provided with a head 19 whichincludes a triangular portion 20 at the rear end thereof and arelatively small cylindrical member 21 at the forward end thereof. Thehead includes a frustoconical portion 22 between por-' tion at andmember 2| which provides a valve normally engaged with a seat providedat the rear end of port Ll" in which the. member 21 is normallydisposed. I

The shaft ltfurtherincludes an enlarged projection 23 at its rearwendandarib 24 joining such projection with the body of the shaft:

A coil spring 25 has one end thereof engaged over said projection 23 andabutting said rib 24,

while the opposite end of the spring restsin the cup member It inbearing engagement withthe base'll thereof. r

It will be seen from Fig. 1 that the cup member I 6 projects rearwardlyof the chamber l4 and into a further enlarged. chamber in the housmg.

A washer 26 provides a stop for the cup member 56 under the action ofspring 25, and resting on the washer 26 is the yieldable flange 21 of abutton 28, which is preferably formed of rubber and is provided with arecess in which the rear end of cup member I6 is seated.

A second washer 29 is disposed against the opposite side of flange 21and a split spring locking ring 30 is disposed in contact with washer29.

A yieldable disk 3| is disposed within chamber l4 between the cammingflange l3 and the flange l 5 of the cup member I 6. Such disk is offrustoconical form and is provided with a central aperture 32 receivingthe shaft l8, and a plurality of slits 33 are provided in the disk foreffecting proper flexing action thereof.

A suitable conduit 34 is provided for flow of liquid from a containerinto the chamber l4, and the flow of liquid may be eifected by anydesired means involving either suction or pressure.

The valve assembly is shown in normal position in full lines in Fig. 1,wherein the valve 22 is seated and the member 2| is disposed within theport I I, whereby liquid cannot be ejected through the port.

I When it is desired to render the assembly op- 3 erative, finger orthumb pressure is exerted on the button 28 causing same to move inwardlyto the position indicated in dot-and-dash lines.

This inward movement of the button causes the cup member l6 to also moveinwardly to the position indicated by dot-and-dash lines. Upon suchinward movement of member I6, the flange thereof engages the rim of disk3] and moves same forwardly to the dot-and-dash line position thereofwhich causes the disk to flex about the oamming flange 13, whereby theinner edge thereof about the aperture 32 engages the rib 24 and movesthe shaft l8 rearwardly against the action of spring 25.

Upon such rear movement of the shaft l8 the head I9 is also movedrearwardly, thereby unseating valve 22 and withdrawing member 2| fromwithin the port I l' to the position indicated in dot-and-dash lines.

Upon release of pressure on the button 28, the spring 25 will overcomethe spring action of disk 3! and move the shaft 18 forwardly and therebyseat the valve 22 and move member 2| into the port H. The successivemovements of member 2i into and out of port ll keep the wall thereofclean by its wiping action thereon, and furthermore such member closesthe outer end of the port upon closure of valve 22 to preclude dropsfrom falling from the port.

The triangular head portion 20 acts to guide the shaft within the memberI I while permitting flow of liquid, and the spring 25 serves to centerthe inner end of the shaft within the member 1 l.

VVnile I have disclosed my invention in accordance with a singlespecific embodiment thereof, such is to be considered as illustrativeonly, and not restrictive, the scope of the invention being defined inthe following claims.

What I claim and desire to secure by Letters Patent is:

1. In a valve assembly, a housing having a liquid receiving chambertherein, a cylindrical valve member supported within said housing incommunication with said chamber and having a liquid flow port in itsouter end, a valve stem disposed within said member for movement axiallythereof, a valve seat in said member adjacent said port, a valve on saidstem normally engaging said seat, a push member supported by saidhousing, a coil spring disposed between said push 4 member and one endof said stem for normally maintaining the valve in engagement with theseat, and yieldable means disposed within said chamber and having anoperable engagement with said stem, valve member and push member forwithdrawing said valve from the seat in opposition to said coil springupon movement of said push member in a direction toward said seat.

2. The structure according to claim 1, wherein said yieldable meanscomprises a frusto-com'cal disk having a central aperture through whichsaid stem extends, a rib on said stem engageable by said disk, andradially spaced circular projections on said valve member and said pushmember engageable with opposite sides of said disk for flexing same inthe movement of the valve from the seat.

3. The structure according to claim 1, wherein said push membercomprises a rigid cup member within which one end of said spring seats,and a yieldable button externally of said cup member and receiving aportion of same.

4. The structure according to claim 1, wherein said push membercomprises a rigid cup member receiving one end of said spring, ayieldable button externally of said cup member and receiving a portionthereof, and stop means disposed between said cup member and said buttonand engageable with the former for limiting re traction of the pushmember under the action of said spring.

PAUL ENGSTRUM.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,146,011 Mason July 13, 1915 1,146,012 Mason July 13, 19151,477,647 Hook Dec. 18, 1923 1,507,139 Pike Sept. 2, 1924 1,607,363Prescott Nov. 16, 1926 1,719,687 Brown July 2, 1929 1,779,064 GohringOct' 21, 1930 1,922,720 Vaughn Aug. 15, 1933 2,174,868 Coffeen Oct. 3,1939 2,414,577 Adair Jan. 21, 1947 2,424,527 Whyte et al July 22, 19472,490,511 Coor'tot Dec. 6, 1949 2,557,785 DuFour June 19, 1951

